A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple randomsamples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a0.10 significance level for both parts.a. Test the claim that the two samples are from populations with the same mean.What are the null and alternative hypotheses?OA. Ho: H₁ H₂H₁: Hq ZH₂OC. Ho: H₁ H₂H₁: Hy > H₂The test statistic, t, is. (Round to two decimal places as needed.)(Round to three decimal places as needed.)The P-value isState the conclusion for the test.C...OB. Ho: H₁ H₂H₁: Hy #H₂OD. Ho: Hg #U2H₁: Hy

Solution:Given information: , ,

Answered: A study was done using a treatment…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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An experiment was conducted to determine whether giving candy to dining parties resulted in greater tips. The mean tip percentages and standard deviations are given in the accompanying table along with the sample sizes. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b). State the conclusion for the test. ID No candy Two candies H FFF H₁ H₂ b. Construct the confidence interval suitable for testing the claim in part (a). 14-₂0 < (Round to two decimal places as needed.) n x S 24 18.43 1.55 24 20.57 2.33 OA. Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that giving candy does result in greater tips. B. Reject the null hypothesis. There is sufficient evidence to support the claim that giving candy does result in greater tips. OC. Fail to reject the null hypothesis. There is sufficient…
A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts. a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? A. Ho: H₁ H₂ H₁: H₁ H₂ OC. Ho: H₁ H2 H₁ H₁ H₂ The test statistic, t, is -1.45. (Round to two decimal places as needed.) The P-value is 0.153. (Round to three decimal places as needed.) State the conclusion for the test. C OB. Ho: H₁
A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level X for both parts. Treatment Placebo H1 H2 In 31 40 2.35 2.66 0.67 0.95 ... C. Ho: H1 = H2 H1: Hy> H2 'D. Ho:H1 =H2 H,: H1 # H2 The test statistic, t, is - 1.61 . (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.)
Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Refer to the accompanying data set. Use a 0.01 significance level to test the claim that women and men have the same mean diastolic blood pressure. Women Men Women Men69.0 71.0 63.0 63.095.0 65.0 73.0 81.079.0 68.0 57.0 92.065.0 61.0 59.0 80.071.0 65.0 79.0 89.080.0 71.0 72.0 63.059.0 58.0 70.0 72.051.0 40.0 64.0 79.072.0 66.0 66.0 76.087.0 65.0 84.0 57.067.0 81.0 55.0 67.059.0 75.0 76.0 84.073.0 53.0 74.0 71.063.0 77.0 51.0 69.066.0 51.0 91.0 68.087.0 91.0 58.0 71.057.0 78.0 82.0 73.085.0 81.0 83.0 72.071.0 59.0 77.0 68.062.0 73.0 66.0 77.071.0 80.0 72.0 67.072.0 103.0 61.0 51.089.0 61.0 88.0 66.070.0 79.0 57.0 71.067.0 73.0 77.0 66.067.0 84.0 77.0 76.071.0 64.0 90.0 51.081.0 67.0 64.0 55.073.0 55.0 70.0 65.089.0 84.0 79.0 85.063.0 78.0 42.0 84.069.0 56.0 73.0 72.077.0 62.0 71.0 80.091.0 65.0 46.0…
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Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.01 significance level to test for a difference between the measurements from the two arms. What can be concluded? Right arm Left arm OA. Ho: H0 H₁: Hg > 0 In this example, H is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the measurement from the right arm minus the measurement from the left arm. What are the null and alternative hypotheses for the hypothesis test? OC. Ho: Hg 0 H₁: Hg 0 7 w S 152 170 x mand H Identify the test statistic. t=(Round to two decimal places as needed.) Identify the P-value. P-value (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? than the significance level, Since the P-value…
You want to see if the average grade for nontraditional age students is less than the average grade for traditional age students. You believe both populations are normally distributed, but you do not know the standard deviations for either. You obtain the following two samples of data. Non-Traditional Age Students Traditional Age Students 53.9 87 102.9 99.8 44.1 63.9 72.6 87.5 70.2 100.8 88.7 114.4 46.9 54.7 83.4 101.4 38 108.9 53.1 88 29.5 121.5 117.5 74.3 79.8 105.2 86.8 94.1 88.1 92.7 77.3 93.2 44.1 98.4 74.4 114.4 72.6 75.8 29.5 88 42.4 105.8 48.2 108.9 68.7 92.7 90.8 97.4 85.7 97.4 62.5 135.7 Use a significance level of 0.050.05 to answer the following. What is the test statistic for this sample? (Report answer accurate to three decimal places.)t-test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value =
I need the correct answer for b.
Treatment Placebo 3. H1 H2 table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts. A study was done using a treatment group and a placebo group. The results are shown in the 27 40 In 2.39 2.65 0.95 0.57 a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? O A. Ho: H1 = H2 O B. Ho: H1H2 D. Ho: H1 H2 The test statistic, t, is (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) State the conclusion for the test. O A. Fail to reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same mean. O B. Reject the null hypothesis. There is not sufficient evidence to warrant rejection…
An experiment was conducted to determine whether giving candy to dining parties resulted in greater tips. The mean tip percentages and standard deviations are given in the accompanying table along with the sample sizes. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b). OA. Ho: H₁ H₂ H₁: H₁ H₂ OC. Ho: H₁ H₁: H₁ C a. Use a 0.05 significance level to test the claim that giving candy does result in greater tips. What are the null and alternative hypotheses? H₂ H₂ No candy Two candies B. Ho: M₁ = H₂ H₁: H₁ H₂ D. Ho: H₁ μ H₁ H₂ H₂ H₁: M₁
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